Rubber-tire setter.



Patented July l5, I902.

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UNITED STATES PATENT OFFICE.

HUGH R. AULD, OF BOSTON, MASSACHUSETTS, ASSIGNOR, BY MESNE AS- SIGNMENTS, OF ONE-HALF TO JOHN J. MCGLINCHY, OF CHELSEA, MASSA- cnusn'rrs.

SPECIFICATION forming part of LetterslE'atent N 0. 704,953, dated July 15, 1902.

Application filed October 16, 1901. Serial No- 78,84i7. (No model.)

To all tub/0112 it may concern.-

Be it known that I, HUGH R. AULD, of -Boston, in thecounty of Sufiolk and State of Massachusetts, have invented certain new and useful Improvements in Rubber-Tire Setters, of which the following is a specification.

This invention relates to apparatus for setting wired rubber tires to vehicle-wheelsthat is, for tighteningthe bands or wires which hold the tire to the wheel-rim preparatory to uniting the ends of said wires.

The invention has for its objects to provide an inexpensive, durable, and quick-operating article of this class, to provide means for bringing the wires or bands of the tire when the latteris provided with a plurality of such wires or bands to the same tension preparatory to the simultaneous final tightening v of 7 the wires, andto provide an improved means for quickly adjusting the wheel toward or from the wiretightening devices.

Of the accompanying drawings, Figure 1 represents a front elevation of a tire-setter constructedaccording to my invention. Fig. 2 represents an edge view thereof. Figs. 3, 4, and 5 represent sectional perspective views of the three clamping-heads in the machine.

The same reference characters indicate the same parts in all the figures.

In the drawings, 1 is a support, such as the wall of a room or building, and on this wall" through a link 6 with a pivoted hand-lever 7,

I whereby the wheel may be quickly adjusted to bring its rim into proper relation with the wire-tightening devices hereinafter described.

The wire-tightening mechanism comprises i the following devices:

holes occupied by the guiderods. On the blocks are the grippers to hold the wires, as presently described. Some of the advantages of this construction are that the strain of'the blocks is entirely borne by the right and left threads on the screw-shaft and not by the bearing of said shaft. The ends of the wires approach in straight lines and are in the best position to be joined when they meet. Since the movement of approach is imparted to both blocks, the movement of each is less of a departure from the arc of the wheel than would suitably grooved complementally at 19 19 to receive and grip a pair of parallel wires 20 20 in the tire. Clamping pressure is simultaneously applied to the plates by means of a bolt 21.

22 is an auxiliary sliding block mounted on the guide-rods 8 8 and operated by connection through a link 23 with a pivoted handlever 24. This block has a fixed pin 25, coacting with a pair of automatic gripping-dogs 26 26, pivoted on a pin 27 and'having serrated eccentric grippingfa'ces, as shown. The ends of thewires which are clamped by the grip ping-plates on the block 16 also pass freely through enlarged channels 28 28 in the plates on the block'15 and are engaged by the clamping-dogs 26 26 on the block 22.

Two clamping+dogs 29 29, similar to the dogs 26, arepivoted to a pin 30 on the block 15 and cocperate with a pin 31 to clamp and hold the wires 20.

The operation of the wire-tightener is as follows: Portions of the wires are bared at each end of the tire by forcing back the rubber and placing it under compression, and the gripping-plates 17 17 on the blocks 15 16 are attached to the respective ends, said blocks being considerably separated. The clamps on blocks 16 maybe loosened and block 22 and its clamps 2'6 26 moved outwardly by the wires The principal office of said block 22 and its clamps and operating devices, however, is to place the wires under the same tension when one is looser than the other, preparatory to the final tightening. To effect this, the clamping-plates 17 on block 16 are loosened, and the gripping-dogs 29 29 on block are used as checks to hold the wires. One of the dogs 26 on block 22 is then engaged with the looser wire, the other dog 26 being loosened from the other wire, and the block 22 is retracted to bring the loose wire up to its proper tension. The loose wire is held in check in the position to which it is moved by one of the dogs 29, the other dog 29 having the other wire in check, after which the plates 17 on block 16 are tightened, and the screw-shaft 11 is operated to tighten both wires simultaneously. The ends of the wires are out 01f to the proper length and united by brazing, Weldiug,or in other suitable manner. The weight of the block 22 and its attached operating parts may be imposed upon the long ends of the wires in order to hold said ends of the wires in tension when they are being severed and scarfed with a file.

I claim- 1. A rubber-tire setter comprising a pair of guide-bars, two clamps guided and movable along said guide-bars to draw together the ends of the band or wire of the tire, means to move said clamps toward and from each other, an auxiliary'clamp independently movable along said guide-bars to tighten said wire, and operating means to so move the said auxiliary clamp.

2. A rubber-tire setter comprising means to hold by one end a plurality. of tire-wires, means to draw on the opposite ends of said wires, and a plurality of automatically-acting check-clamps adapted to hold the drawn ends of the individual wires independently of the drawing device.

3. A rubber-tire setter comprising a clamp- 

